In a new thread today named Yellow Bob, Diller mentioned he had a seat reworked and got satisfactory results. The place wants about $50 plus shipping back and forth plus extras if you want them. Here is the quote:
"I was determined to use the rider's saddle since I had Spencers modify the foam for a much more comfortable perch for my keester.
http://greatdaytoride.com/Home_Page.phpThey do not change the form of the seat but place a more comfortable foam beneath the top layer. Cost was quite reasonable and the results were more than worth it."
Or you can save money and go to this site and click on the various tabs and learn how to alter your seat using different foam etc. But you'll need a heavy duty stapler to put the cover back on.
http://www.diymotorcycleseat.com/modify.htmOthers have used a Harley seat/conversion kit sold for the Savage/S40 that is listed on Ebay. I think it is about a $100. And the Corbin mentioned above is probably the best but more expensive route. Or you could go on Ebay and find a Harley seat and figure out your own brackets etc. There a many different Harley seats and people on this forum have used them. Hopefully one will read this and be able to give you a year and model that works without too much trouble.